What should be paid attention to in dealing with eel summer syndrome
We should pay attention to the following points:
First, the treatment of pool water. As it may take a long time to use the drug, it is easy to worsen the water quality, so it is best to change the water greatly and keep the water environment clean at the end of each medication cycle.
Second, in the period of high temperature, we should pay attention to the changes of water temperature and water quality. In general, ventilation should be strengthened, dissolved oxygen in water should be increased, and if necessary, the water level should be raised to prevent the increase of eel death caused by the sharp change of water temperature during medication.
Third, in the early stage of the disease, the use of antibiotics can not significantly inhibit the development of death, we can choose conventional disinfectants such as bromochlorohydantoin, chlorine dioxide, blue angel + virgin and other conventional disinfectants to control the development of the disease, and so on, there are a large number of deaths, and then use the method described above.
Fourth, after the peak of death, eels in the pond must be fed as soon as possible to restore their strength. Can be fed with bait to eliminate bacteria in the eel. At this time, it is necessary to use less irritating drugs to disinfect the water. at the same time, Haizhongbao, Duowei and glucose can be used to bathe the eel to promote the eel to eat.
Fifth, in the treatment of bacteria should pay attention to check whether there are Gill mold and parasitic diseases, if so, should be dealt with first, especially Gill mold must be killed first. Otherwise, the use of antibiotics will cause an outbreak of Gill mildew, resulting in a large number of deaths. If the number of parasites is small, the treatment can be postponed. Eel summer syndrome is a barrier, and it is plain sailing after that. We should not be impatient when dealing with it. As long as we make a correct judgment and persist in handling it in accordance with the above-mentioned methods, we will certainly be able to overcome it.
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Disease control of barracuda
Barracuda belongs to Mugilidae, similar in external morphology to mullet, but with underdeveloped fat eyelids. It lives in coastal areas and estuaries, and can also live in fresh water. It is a eurythermal and euryhaline fish. In its natural state, it scrapes diatoms and putrefied organic matter, and also eats benthos. Artificial compound bait can be used in pond culture. There is a saying of "south mullet and north shuttle" among the cultivated varieties. Barracuda culture is dominant in Jiangsu and northern areas. In recent years, the trend of breeding barracuda in freshwater ponds in coastal areas has developed rapidly.
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Technical measures to reduce the death of spawning parent fish
Reducing the death of spawning parent fish is an important technical work in fish fry culture. There are two main factors causing the death of parent fish in spawning. One is that parent fish consume a lot of physical energy in the process of spawning and reproduction, which increases the side effects of spawning drugs and reduces the resistance of parent fish. If the fish is seriously injured, various pathogens will take advantage of the opportunity to infect the fish and cause disease, resulting in the death of the parent fish. Second, the physique of the parent fish is poor, or the water temperature changes greatly during the induction of labor, and the improper dose of the drug (the dose is too high or too low), the parent fish can not give birth normally.
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